Warranty Reserves

12 Months Ended

Apr. 30, 2020

Warranty Reserves

Warranty Reserves

9.           Warranty Reserves

Warranty reserve activity is summarized as follows:

	April 30,
	2020		2019
	(In thousands)
Beginning balance	$	1,704	$	2,090
Warranty expense		2,258		211
Changes in estimates related to pre-existing warranties		(189)		491
Warranty costs settled		(1,758)		(1,088)
Ending balance	$	2,015	$	1,704

During the fiscal year ended April 30, 2019, the Company revised its estimates based on the results of additional engineering studies and recorded incremental warranty reserve charges totaling $491,000 related to the estimated costs to repair a component of certain small UAS that were delivered in prior periods. During the fiscal year ended April 30, 2020, the Company revised its estimates based on the results of additional engineering studies to $302,000. As April 30, 2020 and 2019, the Company had no remaining warranty reserve related to the estimated costs to repair the impacted UAS and $251,000, respectively. As of April 30, 2020 and 2019, the Company incurred total costs related to this warranty of $288,000 and $240,000, respectively.